Code Question - Electrician Talk - Professional Electrical Contractors Forum

maverick323 · 11-12-2019, 04:52 PM

With a High Impedance neutral system reading 30 ohms, which of the following shall not be used to augment the system?

- gas pipe

- plate

- rod

- gas pipe, rod, plate

article: ?

Thank you

Bird dog · 11-12-2019, 06:07 PM

Is this a test/homework question? Where have you all looked?

maverick323 · 11-12-2019, 06:09 PM

Quote:

Originally Posted by Bird dog

Is this a test/homework question? Where have you all looked?

It is on a code prep packet. I have been searching all through chapter 2.

Bird dog · 11-12-2019, 06:32 PM

Try Art 250.52(B)(1).
250.52 has to to with Grounding electrodes. Supplemental electrode is needed (augment). Lastly, bonding is different (info note referencing 250.104(B) ). And if I'm wrong, someone will correct me.
Btw, read read 250.52 until you get familiar with it.

maverick323 · 11-12-2019, 06:56 PM

Quote:

Originally Posted by Bird dog

Try Art 250.52(B)(1).
250.52 has to to with Grounding electrodes. Supplemental electrode is needed (augment). Lastly, bonding is different (info note referencing 250.104(B) ). And if I'm wrong, someone will correct me.
Btw, read read 250.52 until you get familiar with it.

No mention of High Impedance neutral system though.

Bird dog · 11-12-2019, 06:59 PM

Quote:

Originally Posted by maverick323

No mention of High Impedance neutral system though.

Go to the index in the back & look up all the references to "High-impedance grounded neutral systems". All the references are in Art 250.

11-12-2019, 04:52 PM	#1
maverick323 Member Join Date: Sep 2016 Location: california Posts: 42 Rewards Points: 88	Code Question With a High Impedance neutral system reading 30 ohms, which of the following shall not be used to augment the system? - gas pipe - plate - rod - gas pipe, rod, plate article: ? Thank you

11-12-2019, 06:07 PM	#2
Bird dog Senior Member Join Date: Oct 2015 Location: South East US Posts: 5,184 Rewards Points: 134	Is this a test/homework question? Where have you all looked? __________________ Popcorn munching forum observer "The supreme art of war is to subdue the enemy without fighting." Sun Tzu

11-12-2019, 06:32 PM	#4
Bird dog Senior Member Join Date: Oct 2015 Location: South East US Posts: 5,184 Rewards Points: 134	Try Art 250.52(B)(1). 250.52 has to to with Grounding electrodes. Supplemental electrode is needed (augment). Lastly, bonding is different (info note referencing 250.104(B) ). And if I'm wrong, someone will correct me. Btw, read read 250.52 until you get familiar with it. __________________ Popcorn munching forum observer "The supreme art of war is to subdue the enemy without fighting." Sun Tzu Last edited by Bird dog; 11-12-2019 at 06:55 PM.

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